Averatec USB Problems
Most TriGem Averatec notebook, desktop and netbook computers have at least two universal serial bus ports to connect peripheral devices to. Almost all peripheral devices -- including mice, keyboards, external drives and Bluetooth adapters -- use USB ports, so the universal serial bus is one of the most important technologies used in the computer. If the Averatec fails to detect USB devices, look for software and hardware issues that might hurt USB operation.
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Incompatible USB
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USB 3.0 was released in 2008, USB 2.0, in 2000, and USB 1.1, in 1998. Each successive revision is faster than the revision that came before it. The USB specification is backwards- and forwards-compatible, meaning that, usually, USB 1.1 devices can work with USB 3.0 ports, USB 1.1 ports can detect and operate USB 2.0 devices and so on. This is not a hard-and-fast rule for all USB devices, however; some high-power peripherals won't work when connected to a slower interface. Some Averatec PCs have both USB 1.1 and USB 2.0 ports; if a USB 2.0 or USB 3.0 external hard drive is connected to a USB 1.1 port, the computer might not detect the device, as the hard drive requires faster transfer speeds than the USB 1.1 interface can handle.
Setup Program
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Averatec PCs use built-in software to control the operation of the computer hardware. This software, called the basic input/output system -- the BIOS -- determines when and how the USB ports operate. Pressing the "F2" key when the message "Press <F2> to Enter SETUP" appears onscreen boots the computer into a program that can change the BIOS settings. On some models, the Advanced tab contains settings to enable the USB controllers -- components the computer relies on to operate the USB ports -- or to turn USB support on or off in older OSes. If the USB interface is disabled, the computer won't recognize USB devices.
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USB Controller
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Windows needs a functioning USB host controller and USB root hub to manage USB devices and control data communication. Without a working host controller or root hub, the computer won't be able to retrieve data from, or transfer data to, connected USB hardware. Device Manager, a database found in Control Panel that holds all of the software needed to control computer components, lists the host controllers and root hubs in the Universal Serial Bus Controllers category. If a USB host controller or USB root hub is malfunctioning, the device will have an exclamation mark (!) next to it. Double-click the device to see the associated error message.
Software Upgrade
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USB problems can occur after upgrading to a different operating system or service pack, or installing a new hot fix. Some Averatec PCs might not offer USB support in certain operating systems; contact TriGem to see if your product supports the new OS. Some service packs and hot fixes can also affect the operation of the USB ports or conflict with other software used to control a USB device. If USB devices stop working and you made a recent system upgrade, uninstall the patch or SP from the Add or Remove Programs or Programs and Features module.
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